<template>
  <el-button type="primary" plain @click="dialogFormVisible = true">添加学生</el-button>
  <el-table :data="students" style="width: 100%">
    <el-table-column label="编号" prop="id" />
    <el-table-column label="姓名" prop="name" />
    <el-table-column label="性别" prop="gender" />
    <el-table-column label="年龄" prop="age" />
    <el-table-column label="手机" prop="cellphone" />
    <el-table-column label="籍贯" prop="address" />
    <el-table-column align="right">
      <template #header>
        <el-input v-model="keyword" size="small" placeholder="搜索学生" />
      </template>
      <template #default="scope">
        <el-button size="small" @click="editStudent(scope.row)">
          更新
        </el-button>
        <el-button
            size="small"
            type="danger"
            @click="deleteStudent(scope.row.id)">
          删除
        </el-button>
      </template>
    </el-table-column>
  </el-table>
  <!--  分页-->
  <el-pagination background layout="prev, pager, next" :total="total"
                 :page-size="pageSize" @current-change="loadStudent"/>
  <!--  对话框-->
  <el-dialog v-model="dialogFormVisible" title="学生信息" width="500" @close="student = {}">
    <el-form :model="student">
      <el-form-item label="姓名" >
        <el-input v-model="student.name" autocomplete="off" />
      </el-form-item>
      <el-form-item label="年龄" >
        <el-input v-model="student.age" autocomplete="off" />
      </el-form-item>
      <el-form-item label="性别" >
        <el-input v-model="student.gender" autocomplete="off" />
      </el-form-item>
      <el-form-item label="电话" >
        <el-input v-model="student.cellphone" autocomplete="off" />
      </el-form-item>
      <el-form-item label="籍贯" >
        <el-input v-model="student.address" autocomplete="off" />
      </el-form-item>
    </el-form>
    <template #footer>
      <div class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取消</el-button>
        <el-button type="primary" @click="saveStudent">
          确认
        </el-button>
      </div>
    </template>
  </el-dialog>
</template>

<script>
import {ElMessage,ElMessageBox} from "element-plus";

export default {
  name: "StudentView",
  data(){
    return {
      students: [],//学生集合
      keyword: '',
      current: 1, //当前页
      pageSize: 10, //页大小
      total: 10,   //总数
      dialogFormVisible: false, //对话框是否显示
      student: {}  //学生信息
    }
  },
  methods:{
    loadStudent(current){
      this.current = current
      this.$axios.get('/findStudentPage?current=' + this.current + "&pageSize=" + this.pageSize)
          .then(result => {
            console.log('student',result.data)
            if(result.data.code === 200){
              this.students = result.data.data.data;
              this.total = result.data.data.total;
            }
          })
    },
    //编辑学生
    editStudent(stu){
      //显示对话框
      this.dialogFormVisible = true;
      //显示学生信息  stringify object --> string  parse string ---> object
      this.student = JSON.parse(JSON.stringify(stu));
    },
    //保存学生
    saveStudent(){
      //通过id是否存在来判断是做添加还是更新
      if(this.student.id){
        //调用后台的更新学生接口
        this.$axios.post('/updateStudent',this.$qs.stringify(this.student))
            .then(result => {
              console.log('update',result.data)
              if(result.data.code === 200){
                ElMessage.success('更新成功')
                //更新学生列表
                this.loadStudent(this.current)
              }
            })
      }else{
        //调用后台的添加学生接口
        this.$axios.post('/addStudent',this.$qs.stringify(this.student))
            .then(result => {
              console.log('add',result.data)
              if(result.data.code === 200){
                ElMessage.success('添加成功')
                //更新学生列表
                this.loadStudent(this.current)
              }
            })
      }
      this.dialogFormVisible = false
    },
    //删除学生
    deleteStudent(id){
      ElMessageBox.confirm(
          '是否确认删除?',
          'Warning',
          {
            confirmButtonText: '确认',
            cancelButtonText: '取消',
            type: 'warning',
          }
      ).then(() => {
        //调用后台的删除功能
        this.$axios.post('/deleteStudent?id=' + id)
            .then(result => {
              if(result.data.code === 200){
                this.loadStudent(this.current)
              }
            })
      })
          .catch(() => {

          })
    }
  },
  mounted() {
    //默认加载第一页
    this.loadStudent(1)
  }
}
</script>

<style scoped>

</style>